Ricoh MP 6002 User Manual page 801

For a description of the printer job authentication levels, see p.63 "Printer Job Authentication".
If you select [Entire] or [Simple (All)], proceed to step 13.
If you select [Simple (Limitation)], proceed to step 10.
10. Press [Change].
11. Specify the range in which [Simple (Limitation)] is applied to "Printer Job Authentication".
You can specify the IPv4 address range to which this setting is applied, and whether or not to apply
the setting to the parallel and USB interfaces.
12. Press [Exit].
13. Press [OK].
14. Press the [Login/Logout] key.
A confirmation message appears.
If you press [Yes], you will be automatically logged out.
User Code Authentication
35